Re: carb. diaphram
I've never seen a good one. Marvel Shebler must not have either, because the instructions say "Always replace the fuel pump diaphragm"
Seriously, as I remember the thing, the diaphragm has rubber flappers that act as check valves. They need to lay flat.
Send me a PM with your e-mail address and I'll send you the carburetor rebuild instructions. It is several pages.
